I have a Leviton light switch (picture). It automatically turns off after about 15 mins of absence of motion and will turn on if I enter the room only a few minutes after it has turned off. 

However, if a long enough period elapses it won't automatically turn on and I have to press the button again.

 Is there a setting to change so it automatically turns on by itself at any time?

[![Leviton light switch][1]][1]


  [1]: https://i.sstatic.net/cbJ99.jpg